10
SUNDAY, OCTOBER 20, 1985
AS THE WINTER MONSOON WAS ENHANCED BY THE PRESENCE OF TYPHOON ANDY OVER THE NORTHERN PART OF THE SOUTH CHINA SEA, STRONG EASTERLY WINDS WERE EXPERIENCED OFFSHORE AND IN EXPOSED PLACES IN THE AFTERNOON OF SEPTEMBER 29. IT BECAME COOLER AND THE TEMPERATURE DROPPED TO A MINIMUM OF 22.7 DEGREES CELSIUS, THE LOWEST OF THE MONTH.
WINDS MODERATED IN THE MORNING OF SEPTEMBER 30, THE WEATHER WAS FINE APART FROM A FEW LIGHT SHOWERS.
TWO INCOMING AIRCRAFT WERE DIVERTED FROM HONG KONG DUE TO ADVERSE WEATHER ASSOCIATED WITH TYPHOON TESS. THERE WERE ALSO 10 FLIGHTS CANCELLED AND 50 DELAYED.
THUNDERSTORM WARNINGS WERE ISSUED ON SEPTEMBER 4 9, 10, 19, 20. 25 AND 29. A FLOOD WARNING AND A LANDSLIP WARNING WERE ISSUED ON SEPTEMBER 6. NO FIRE DANGER WARNINGS WERE ISSUED.
SIGNALS HOISTED DURING THE MONTH WERE AS FOLLOWS:
DATE AND
WEATHER SYSTEM SIGNAL
TIME OF HOISTING
DATE AND TIME OF LOWERING
TYPHOON TESS
1
SEPT. 4 9 AM
SEPT. 4
9.10 PM
3
SEPT. 4 9.10 PM
SEPT. 6
1.10 AM
8 SE
SEPT. 6
1.10 AM
SEPT. 6
6.10 AM
3
WINTER MONSOON STRONG
SEPT. 6
SEPT. 9
6.10 AM
SEPT. 6
2 PM
5 PM
SEPT. 10
3 AM
MONSOON
TROPICAL STORM VAL 1
SEPT. 17 5 AM
SEPT. 18
8.10 AM
WINTER MONSOON STRONG
SEPT. 29 3.10 PM
SEPT. 30
10.05 AM
MONSOON
THE MONTH'S FIGURES AND DEPARTURES FROM NORMAL WERE:
SUNSHINE
RA INFALL
CLOUD INESS
RELATIVE HUMIDITY
MEAN MAXIMUM TEMPERATURE
MEAN TEMPERATURE
=
142.4 HOURS 46.1 HOURS BELOW NORMAL
335.5 MM = 15.1 MM ABOVE NORMAL
77 PER CENT = 15 PER CENT MORE THAN WORNAL
83 PER CENT =
4 PER CENT HIGHER THAN
NORMAL
29 DEGREES - 1.5 DEGREES CELSIUS BELOW
CELSIUS
26.8 DEGREES
CELSIUS
NORMAL
0.7 DEGREE CELSIUS BELOW
NORMAL
/MOAN MINIMUM